Patient's question:
NoDoctor's answer:
The menstrual period of women is generally 3 to 7 days. The pattern of menstruation is that the amount of blood flow is low on the first day, increases on the second and third days, and then gradually decreases until the blood flow stops. This is because on the first day, the shedding of the endometrium just begins, and on the second and third days, more endometrium sheds, leading to an increase in blood flow. The uterus is stimulated, strengthening its contractions to expel a large amount of blood. Some people may experience a small amount of blood flow again a day or two after the blood flow has stopped, which is commonly referred to as "blood flow returning." This is also a normal phenomenon.